Purchase spray drying equipment Shanghai BILON brand small spray dryer features.

Characteristics

First, fast drying speed and excellent machine performance

After being sprayed, the liquid is atomized into dispersed particles, and the surface area is greatly increased. After contact with hot air, the drying process can be completed in a very short time. Under normal conditions, 100% to 98% of water can be evaporated in 100 to 150 ° C for 1 to 3 seconds. Since the drying process is completed in an instant, the particles of the finished product can substantially maintain a spherical shape similar to that of the droplets, thereby having good dispersibility, excellent brewability, and high solubility.

Second, reduce sticky walls and coke powder, improve the quality of finished products

Spray dryers, centrifugal spray dryers and multi-nozzle spray dryers are three typical spray equipment. The spray direction of the centrifugal spray and the multi-nozzle spray is horizontal or vertical (axial direction). In the horizontal direction, in order to make the hot air and the liquid droplets in good contact, the drying efficiency is improved, and the hot air is vortexed, which tends to cause adhesion, and the deposited material may cause problems such as heat denaturation and cleaning. When the speed of the hot air is along the axis of the drying tower, the hot air flow line often shifts as a whole, and the hot air is not well mixed with the liquid, which is inefficient and partially attached.

Third, the integration of drying tower, separation chamber and cooling chamber

In order to meet market needs, improve product solubility, brewing properties and packaging properties. Some spray drying equipment adds granulation equipment, but it increases the thermal denaturation and loss of aromatics of the product, while the MD spray dryer effectively solves the integration problem of the drying tower, the separation chamber and the cooling chamber. In the slow drying stage of spray drying, the temperature of the powder rises as the moisture decreases. In the case of dairy products, when the temperature of the dry air in the lower part of the drying tower is 90 to 100 ° C, the temperature of the powder is about 60 ° C. In order to prevent thermal denaturation, it is desirable to rapidly cool at the end of drying. For this MD type spray dryer, a flow cooling chamber is installed in the lower part of the drying tower. This system has a cyclone-separated fine powder which is transported by air to a flow cooling chamber at the lower part of the separation chamber, together with the powder separated by gravity in the separation chamber. It is cooled to about 30 ° C and then discharged, and the result has a good control effect on thermal denaturation.

The use of the fourth and secondary hot air

When hot air is blown into the drying tower, the temperature at the blowing point is very high. If a trace amount of product adheres to this part, it will be browned all the time, and it will fall continuously, which will cause the product quality to drop. In this MD type spray dryer, two concentric cylinders are arranged at the mouth of the hot air blowing into the drying tower, and a low temperature secondary hot air (70 to 100 ° C) can be returned from the middle of the two cylinders, which effectively solves the problem. The above-mentioned problem of deterioration in quality due to adhesion. Moreover, the ratio of the secondary hot air volume (G) to the hot air volume (G) is G'?G=0.05, or larger (can be increased to 0.3-0.4), which is favorable for improving the solubility of the product.

BILON brand, service attentively

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